Rest for molding-machine flasks



June 10 1924.

O. W. HOWLAND REST FOR MOLDING MACHINE FLASKS Filed July 29, 1918 Patented June 10, 1924.

OLNEY w. HOWLAND, or LYNN, MASSACHUSETTS, ASSIGNOR To HENRY ELPRIDMOBE, or CHICAGO; ILLINOIS, A CORPORATION or ILLINOIS;

REST FQR MOLDING-MACHINE FLASKS.

anplic tio fiiea July 29, 19,18. Seria'1 1 Io. 247,1 i3..

T oall whom it may boncern:

Be it known that I, OLNuY W; HOWLAND, a citizen of the United States, residing at Lynn, in the county. of Essex, and State of Massachusetts, have invented a certain new andv useful Improvement in Rests for Molding-Machine" Flasks, of which the following is a specification,

This invention relates to rests for molding machine flasks and has for its object to provide a new and improved device of this description, In the operation of'a rock over molding machine the, flask containing the pattern is in one position while the sand s ing. mme or. pa ked t. he.v pattern and then the flask is-covered, andturned over sothatthis cover becomes the bottom and engages a flask rest. It is desirable that the flask rest be of; such form that it automaticall y adjusts itself asthe flask engages it so that theflask maybe properly seated and then, such flask rest fixed in position to hold theflaskin this proper position While the pattern is being withdrawn, One of the objects of the present invention. is to provide a flask rest ofthisdescription. In the'd-rawings I have illustrated a flask rest of this description.

Fig.1 is a view showing a side elevation ofoneforni of flask rest;

Fig. 2 is a longitudinal vertical sectional view throughthe flask restshown in F 'ig, 1;

Fig. 3 is a bottom view of the flask rest shown in Fig. 1 v I I v I Fig. tisan end view of two flaskrests showing the flask in position thereon,

Like nun' erals refer to likeparts throughout the several figures.

In the preferred form ofusing. the flask rest I providetwo flask rests separated by a space; the flask resting on. top of these flask. rests as illustrated in Fig. 4:;

Each flask rest consists of a flaskengaging. part 1 which is shown intheform of anenclosing casing open at the bottomand which is preferably provided at the top v with the engaging: faces; 2,; the portion 3 between theengaging faces being preferably somewhat depressed (see Fig. 2*). Associated withthe engaging part 'is a supportingpart 4 which is rigidlyheld in any desired manner upon" a suitable support and supporting partsftogether.

desired inanner as by 'the screws. 22;

suchas the rod 5, which fits into anopening in the supporting. part4. Theengagin-g part 1 is movable and preferably, elastically connected with the. supporting part 4 in. some suitable manner,. as v for example,

by beingnmunted upon 7 the springs n 6' which arev interposed between; the engaging part and the supporting part 4. I. prefer to have projections 7 on the engaging. part and. projections 8 on the supporting part wh1ch project into the springs 6 whenv coil springs areused so as to prevent the springs r m ecom ng di pla ed Con ected ith the supporting part 1 are two. wedges 9 and 10. TheWBdgelO is connectedFtothe suppfivfting Pa y e; pin 117 and. the,

ner end, thereof rests upon the cross, piece 12. The wedge 10}- passes between parts 13 on the supporting part whichpartsraljso preferably have. wedge faces so, that'when the wedge 10 is forced between these parts 1 the engaging part vand supporting; part are locked against relative movement-E The wedge 9 passes between similar parts 1 1 at the other end of therest, The wedge 9j is mounted so that it. may be moved longitudinally to engage the faces of'the parts 14. This result may be secured in any-desired manner as by mountingfit upon a cam 15 connectedwith a shaft 16jwl'1ich is mounted on theengaging pa-rt and whichis 7 provided with a handle 17 by means of which the cam may be rotated; The wedge is provided with an enlarged opening 15 for this cam. I prefer to provide the engaging part with the engaging faces 18 which are engaged by the parts 13 and 14: so as to more securely lockthe engaging I prefer to provide the "engaging part with a stop 19 and the shaft. 16 with a stop,'20 ;which engage so as to stop, the movementlo-f' the cam when the wedges.have..been sufficiently movedg to connect the engaging part 1 with the holding part 4. The inner end ofthe wedge Q'restsQupon a removable crosspiece 21 attached tothe engaging; part in any have described in detail a particular construction embodying the invention, butzit is, of course, evidentflthat the parts may be varied without departing; from" the spirit the flask rest the parts are in such position that the engaging part 1 is free to move with relation to the supporting part 4, the wedges 9 and 10 being disengaged from the supporting part to permit this. When the flask isthen placed upon the flask rest or a plurality of them as illustrated in Fig.4, the engaging part 1 of the flask rest is then free to move to properly adjust itself so that the flask will be properly seated upon it, the spring 6 permitting this. When the flask has been properly seated the cam 15 is moved by moving the handle 17, so as to force the wedge 9 in betweenthe parts 14. As this wedge engages the parts 14 it, as it were, draws the engaging part forward so as to move the wedge 10 into engagement with the parts 13. The handle 17, and the cam 15 therefore act to bring both wedges into operation. As these wedges are pressed against the faces of the parts 18 and 14 they bind or clamp the engaging part to the supporting part so as to prevent any further relative movement between them, thus thereby rigidly clamping them together. The flask is now rigidly held in its adjusted position so that the separation of the pattern from the sand may be properly accomplished. After this has been done, the handle 17 may be moved back to its original position as shown in Fig. 8 so as to bring the parts of the rest into their initial position so that the rest may again be used.

I claim:

1. A flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, a wedge connected with one of said parts, opposed substantially vertical engaging faces on the other part between which the wedge is received, and means for moving the wedge and the part having the engaging faces relatively longitudinally to bring them into engagement to clamp the engaging part and supporting part to gether.

2. A flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, separated parts on the supporting part, a wedge adapted to be projected between said separated parts, a shaft connected with the engaging part, a cam on said shaft and engaging said wedge, and

means for rotating said cam so as to move the wedge into contact with said separated parts on the supporting part.

3. A. flask rest comprisin an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, separated parts on the supporting part, a wedge connected with said engaging part and adapted to be projected between said. separated parts, and a second wedge at the other end of said engaging part, separated parts on the supporting part between which said second wedge projects, and means for moving said wedges so as to cause them to engage the engaging faces of the separated parts on the supporting part so as to clamp the engaging part and supporting part together.

4. A flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, a spring interposed between said engaging part and supporting part, separated parts on the supporting part, a wedge connected with said engaging part and adapted to be projected between said separated parts, a second wedge at the other end of said engaging part, separated parts on the supporting part between which said second wedge projects, a cam engaging said second wedge, a shaft to which said cam is connected, said shaft mounted upon said engaging part and free to move with relation thereto whereby when the shaft and cam are rotatedboth wedges are brought into their operative positions to clamp the engaging part and supporting part together.

5. A'flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, two separated wedges connected with said engaging part, engaging faces on the supporting part adapted to be engaged by said wedges, and means for forcing the two wedges toward each other to engage said faces.

6. A flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, a wedge mounted on the engaging part, and means connected with the supporting part for engaging said wedge when it is in its operative position so as to a hold it and the flask engaging part in fixed relation with the supporting part.

7. A flask rest comprising an engaging part for engaging the flask, a supporting part upon which said engaging part is movably mounted, a wedge connected with said engaging part and in'longitudinal alignment with said supporting part, and actuating mechanism for moving said wedge so as to cause it to engage the supporting part and hold the flask engaging part and supporting part in fixed relation.

8. A flask rest comprising a substantially horizontally extending engaging part for en gaging the flask, a supporting part upon which said engaging part is elastically supported at separated points, a wedge movably mounted on the engaging part, said supporting part being provided with opposed faces and means for moving the wedge between said opposed faces to clamp the engaging part to the supporting part.

In testimony whereof, I aflix my signature in the presence of'two witnesses this 28th day of June, 1918.

OLNEY W. HOWLAND.

Witnesses:

WILLIAM T. MURPHY, J OHN J. SEXTON. 

